"The interface is largely based off of Paint.NET, but most of the code is original. The only code directly used by Pinta is for the adjustments and effects, which is basically a straight copy from Paint.NET 3.0.

Regardless, we are very grateful that Paint.NET 3.36 was open sourced under the MIT license so we could use some of their awesome code."

From what I have read on the pinta site and http://www.murga-linux.com/puppy/viewtopic.php?t=40567, pinta requires Mono runtime, which weighs in at about 35 MB in an sfs. That is more than twice the size of Gimp, which is more powerful. So, not much bang for the buck, unfortunately, when dependencies are taken into account. Of course, I may be wrong, but that is my understanding.

Puppy has GTK 2.14. Gnome-paint will run with only a slight modification but you don't get any menus. I didn't mess with it further because the window was not resizable, making it useless for netbooks. It might be worth a second look though if someone wants to fix it.

You're right. I got gpaint from gnu.org http://www.gnu.org/software/gpaint/, and it is old as the hills (2004 or 2005). Gnome-paint is 2009 or 2010. And the sources are different. Thanks for putting me on the right track. I wish the MTPaint gui had been done in Glade, because changing that would have been a breeze. I agree with you that we are missing an "intuitively obvious" paint prog that has the functions of MTPaint. Sumo.org once gave away a standalone sumopaint (version 1.0) via a German computer magazine, but I have not been able to locate it. It runs in flash. I, too, am still looking for a GTK-based simple paint that has undo, layers and the alpha channel. I'll certainly holler when or if I find something. M$ seems to have a lot of that type of thing available, but not my cup of tea.

"I didn't mess with it further because the window was not resizable, making it useless for netbooks."
Was there no resizing grip or statusbar?

"It might be worth a second look though if someone wants to fix it."
According to http://www.mail-archive.com/gtk-app-devel-list@gnome.org/msg12493.html all one has to do is "hand define some uimanagers", as far as the menus are concerned. I could do it if someone has an example/link.